CT理论与应用研究2026，Vol.35Issue(4)：634-642,9.DOI:10.15953/j.ctta.2026.015
二维融合宽线地震处理技术在南海北部中生界勘探中的应用
Application of 2D Fused Wide-line Seismic Processing Technology in Mesozoic Exploration of the Northern South China Sea
摘要
Abstract
The exploration of Mesozoic strata in the Chaoshan Sag of the Pearl River Mouth Basin in the South China Sea faces challenges such as severe seismic wave energy shielding and strong multiple-wave development.This study introduces a wide-line acquisition and processing approach to perform integrated wide-line processing on two 2D seismic lines acquired in proximity but in different years.Key issues during processing,including common midpoint(CMP)bin definitions,multiple suppressions,and imaging methods,are discussed.Noise suppression,multiple attenuation,and consistency processing for the time shifts,amplitudes,frequencies,and phases were performed.The 2D pre-stack depth migration method was selected for imaging and yielded favorable results.The results indicate that compared to the original 2D data,the processed data after integrated wide-line processing enhanced the effective reflection energy in the middle-deep layers,improved the multiple wave suppression effect,broadened frequency bands with richer low-frequency components,improved the signal-to-noise ratio(SNR),increased accuracy in velocity analysis,clearer wave group characteristics of the target horizons,and better continuity of events.This method provides a valuable reference for leveraging historical data to improve middle-deep layer imaging and explores a new approach to wide-line processing.This represents an economical and practical technology for middle-to deep-layer exploration in offshore areas with abundant 2D seismic data.关键词
测线融合/宽线/潮汕凹陷/中生界/叠前深度偏移成像Key words
survey line fusion/wide-line/chaoshan sag/mesozoic/prestack depth migration imaging分类
天文与地球科学引用本文复制引用
李佳伟,荣骏召,邓桂林,陈玺,刘玉萍,王利杰..二维融合宽线地震处理技术在南海北部中生界勘探中的应用[J].CT理论与应用研究,2026,35(4):634-642,9.基金项目
中国地质调查局国家海洋专项项目(DD20201118 （）
DD202403021 （）
DD20240090 （）
DD20221712)). （）
